The picture below shows the positions of the earth, moon, and sun during an eclipse. what is true of the eclipse shown in the picture? a) it is a solar eclipse, in which the moon casts a shadow on the earth. b) it is a lunar eclipse, in which the moon casts a shadow on the earth. c) it is a lunar eclipse, in which the earth casts a shadow on the moon. d) it is a solar eclipse, in which the earth casts a shadow on the moon.

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.